浅海余环流的有限元模拟(英文)

基于海洋资源开发、环境保护和近岸海域地貌复杂性等原因,浅海余环流的研究引起了世界各国海洋学者的兴趣。余环流是风海流、热盐环流和潮余流耦合形成的。滤掉实测流的周期性部分,剩余的环流就是这三部分海水运动的合成结果。余环流难以分解成上述三个组成部分。因而在讨论浅海余环流的场合下,我们应将这三个分量当做一个统一的整体现象予以考虑。根据这个论点,冯士筰、奚盘根和本文第二作者提出了浅海斜压余环流模型。本文将这个模型应用于中国渤海并采用有限元方法求解了模型方程。计算结果与实测资料符合良好。

FINITE ELEMENT MODELING FOR BAROCLINIC RESIDUAL CIRCULATION IN SHALLOW SEA

In view of the importance of marine resources exploitation, environment protection and the geomorphological complexity in coastal seas, great interest is focused in the study on shallow sea residual circulation. This circulation is formed by the coupling effect of wind driven current, thcrmohalinc circulation and tidal residual current. After filtering out the periodic part the observed current records are composed of the above mentioned three components and are difficult to be separated into component parts. Therefore, when dealing with the shallow sea residual circulation, we must consider the three components as a single entity/Based on this argument, a shallow sea baroclinic residual circulation model was presented earlier by Feng and the second author et al. In this paper, we take the Bohai Sea as an example, and apply the Finite Element Method to solve the model equation. The computations show fairly agreeable to the field data.